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#198 fix attempt 2
[etc/awesome.git] / widgets / bat.lua
diff --git a/widgets/bat.lua b/widgets/bat.lua
index f20034b5e17943f4294c7e47fca3b52e79722117..43b7a5f22102fd0cc54bd0ce2bde021586fc415b 100644 (file)
--- a/widgets/bat.lua
+++ b/widgets/bat.lua
@@ -1,10 +1,10 @@
 
 --[[
 
 --[[
-                                                                                                 
+                                                                                                                       
         Licensed under GNU General Public License v2 
          * (c) 2013,      Luke Bonham                
          * (c) 2010-2012, Peter Hofmann              
         Licensed under GNU General Public License v2 
          * (c) 2013,      Luke Bonham                
          * (c) 2010-2012, Peter Hofmann              
-                                                                                                 
+                                                                                                                       
 --]]
 
 local newtimer     = require("lain.helpers").newtimer
 --]]
 
 local newtimer     = require("lain.helpers").newtimer
@@ -13,7 +13,7 @@ local first_line   = require("lain.helpers").first_line
 local naughty      = require("naughty")
 local wibox        = require("wibox")
 
 local naughty      = require("naughty")
 local wibox        = require("wibox")
 
-local math         = { floor  = math.floor }
+local math         = { floor  = math.floor, min = math.min }
 local string       = { format = string.format }
 local tonumber     = tonumber
 
 local string       = { format = string.format }
 local tonumber     = tonumber
 
@@ -23,115 +23,110 @@ local setmetatable = setmetatable
 -- lain.widgets.bat
 
 local function worker(args)
 -- lain.widgets.bat
 
 local function worker(args)
-       local bat      = {}
-       local args     = args or {}
-       local timeout  = args.timeout or 30
-       local battery  = args.battery or "BAT0"
-       local ac       = args.ac or "AC0"
-       local notify   = args.notify or "on"
-       local settings = args.settings or function() end
+    local bat      = {}
+    local args     = args or {}
+    local timeout  = args.timeout or 30
+    local battery  = args.battery or "BAT0"
+    local ac       = args.ac or "AC0"
+    local notify   = args.notify or "on"
+    local settings = args.settings or function() end
 
 
-       bat.widget = wibox.widget.textbox('')
+    bat.widget = wibox.widget.textbox('')
 
 
-       bat_notification_low_preset = {
+    bat_notification_low_preset = {
         title   = "Battery low",
         title   = "Battery low",
-               text    = "Plug the cable!",
-               timeout = 15,
-               fg      = "#202020",
-               bg      = "#CDCDCD"
-       }
-
-       bat_notification_critical_preset = {
-               title   = "Battery exhausted",
-               text    = "Shutdown imminent",
-               timeout = 15,
-               fg      = "#000000",
-               bg      = "#FFFFFF"
-       }
-
-       function update()
-               bat_now = {
-                       status    = "Not present",
-                       ac_status = "N/A",
-                       perc      = "N/A",
-                       time      = "N/A",
-                       watt      = "N/A"
-               }
-
-               local bstr    = "/sys/class/power_supply/" .. battery
-               local astr    = "/sys/class/power_supply/" .. ac
-               local present = first_line(bstr .. "/present")
-
-               if present == "1"
-               then
-                       -- current_now(I)[uA], voltage_now(U)[uV], power_now(P)[uW]
-                       local rate_current      = tonumber(first_line(bstr .. "/current_now"))
-                       local rate_voltage      = tonumber(first_line(bstr .. "/voltage_now"))
-                       local rate_power        = tonumber(first_line(bstr .. "/power_now"))
-
-                       -- energy_now(P)[uWh], charge_now(I)[uAh]
-                       local energy_now        = tonumber(first_line(bstr .. "/energy_now") or
+        text    = "Plug the cable!",
+        timeout = 15,
+        fg      = "#202020",
+        bg      = "#CDCDCD"
+    }
+
+    bat_notification_critical_preset = {
+        title   = "Battery exhausted",
+        text    = "Shutdown imminent",
+        timeout = 15,
+        fg      = "#000000",
+        bg      = "#FFFFFF"
+    }
+
+    function update()
+        bat_now = {
+            status    = "Not present",
+            ac_status = "N/A",
+            perc      = "N/A",
+            time      = "N/A",
+            watt      = "N/A"
+        }
+
+        local bstr    = "/sys/class/power_supply/" .. battery
+        local astr    = "/sys/class/power_supply/" .. ac
+        local present = first_line(bstr .. "/present")
+
+        if present == "1"
+        then
+            -- current_now(I)[uA], voltage_now(U)[uV], power_now(P)[uW]
+            local rate_current      = tonumber(first_line(bstr .. "/current_now"))
+            local rate_voltage      = tonumber(first_line(bstr .. "/voltage_now"))
+            local rate_power        = tonumber(first_line(bstr .. "/power_now"))
+
+            -- energy_now(P)[uWh], charge_now(I)[uAh]
+            local energy_now        = tonumber(first_line(bstr .. "/energy_now") or
                                       first_line(bstr .. "/charge_now"))
 
                                       first_line(bstr .. "/charge_now"))
 
-                       -- energy_full(P)[uWh], charge_full(I)[uAh],
-                       local energy_full       = tonumber(first_line(bstr .. "/energy_full") or
+            -- energy_full(P)[uWh], charge_full(I)[uAh]
+            local energy_full       = tonumber(first_line(bstr .. "/energy_full") or
                                       first_line(bstr .. "/charge_full"))
 
                                       first_line(bstr .. "/charge_full"))
 
-
-                       local energy_percentage = tonumber(first_line(bstr .. "/capacity")) or
+            local energy_percentage = tonumber(first_line(bstr .. "/capacity")) or
                                       math.floor((energy_now / energy_full) * 100)
 
                                       math.floor((energy_now / energy_full) * 100)
 
-                       bat_now.status    = first_line(bstr .. "/status") or "N/A"
-                       bat_now.ac_status = first_line(astr .. "/online") or "N/A"
-
-                       -- if rate = 0 or rate not defined skip the round
-                       if      not (rate_power and rate_power > 0) and
-                               not (rate_current and  rate_current > 0) and
-                               not (bat_now.status == "Full")
-                       then
-                               return
-                       end
-
-                       local rate_time = 0
-                       if bat_now.status == "Charging" then
-                           rate_time = (energy_full - energy_now) / rate_power or rate_current
-                       elseif bat_now.status == "Discharging" then
-                           rate_time = energy_now / (rate_power or rate_current)
-                       end
-
-                       local hours   = math.floor(rate_time)
-                       local minutes = math.floor((rate_time - hours) * 60)
-                        
-                        local watt    = rate_power and (rate_power / 1e6) or (rate_voltage * rate_current) / 1e12
-                        
-                       bat_now.perc = string.format("%d", energy_percentage)
-                       bat_now.time = string.format("%02d:%02d", hours, minutes)
-                       bat_now.watt = string.format("%.2fW", watt)
-               end
-
-               widget = bat.widget
-               settings()
-
-               -- notifications for low and critical states
-               if bat_now.status == "Discharging" and notify == "on" and bat_now.perc then
-                       local nperc = tonumber(bat_now.perc) or 100
-                       if nperc <= 5 then
-                               bat.id = naughty.notify({
-                                       preset = bat_notification_critical_preset,
-                                       replaces_id = bat.id,
-                               }).id
-                       elseif nperc <= 15 then
-                               bat.id = naughty.notify({
-                                       preset = bat_notification_low_preset,
-                                       replaces_id = bat.id,
-                               }).id
-                       end
-               end
-       end
-
-       newtimer(battery, timeout, update)
-
-       return setmetatable(bat, { __index = bat.widget })
+            bat_now.status    = first_line(bstr .. "/status") or "N/A"
+            bat_now.ac_status = first_line(astr .. "/online") or "N/A"
+
+            -- update {perc,time,watt} iff rate > 0 and battery not full
+            if ((rate_current and rate_current > 0) or (rate_power and rate_power > 0))
+                and bat_now.status ~= "N/A" and bat_now.status ~= "Full"
+            then
+                local rate_time = 0
+                if bat_now.status == "Charging" then
+                    rate_time = (energy_full - energy_now) / (rate_power or rate_current)
+                elseif bat_now.status == "Discharging" then
+                    rate_time = energy_now / (rate_power or rate_current)
+                end
+
+                local hours   = math.floor(rate_time)
+                local minutes = math.floor((rate_time - hours) * 60)
+                local watt    = rate_power and (rate_power / 1e6) or (rate_voltage * rate_current) / 1e12
+
+                bat_now.perc = string.format("%d", math.min(100, energy_percentage))
+                bat_now.time = string.format("%02d:%02d", hours, minutes)
+                bat_now.watt = string.format("%.2fW", watt)
+            end
+        end
+
+        widget = bat.widget
+        settings()
+
+        -- notifications for low and critical states
+        if bat_now.status == "Discharging" and notify == "on" and bat_now.perc then
+            local nperc = tonumber(bat_now.perc) or 100
+            if nperc <= 5 then
+                bat.id = naughty.notify({
+                    preset = bat_notification_critical_preset,
+                    replaces_id = bat.id,
+                }).id
+            elseif nperc <= 15 then
+                bat.id = naughty.notify({
+                    preset = bat_notification_low_preset,
+                    replaces_id = bat.id,
+                }).id
+            end
+        end
+    end
+
+    newtimer(battery, timeout, update)
+
+    return setmetatable(bat, { __index = bat.widget })
 end
 
 return setmetatable({}, { __call = function(_, ...) return worker(...) end })
 end
 
 return setmetatable({}, { __call = function(_, ...) return worker(...) end })
awesome window-manager configuration

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